Rate of Reaction

Question 1:(a) What is meant by chemical reaction?(b) Is the rate of reaction affected by pressure? Explain your answer. Answer:(a) Process where one or more reactants are converted into one or more products. (b) Yes.Pressure affects the reaction for reactants in the gaseous state. Question 2:A student carried out an experiment to study a factor … Read more

Question 3:Digestive enzymes function as biological catalysts to change the rate of decomposition of complex food molecules into simpler molecules in the digestive system. What is the use of digestive enzymes other than aiding in the digestion of food? Figure 2 shows one application of biological catalysts in daily life. (a) Give two examples of … Read more

Question 1:(a) Name one life process in the human body which involves the concept of rate of reaction. (b) How does the application of rate of reaction influence the life process in question 1(a)? Answer:(a) Digestion of food (b) Rate of reaction in the digestion of food is increased with the presence of enzyme as … Read more

Question 1:State five factors which affect the rate of reaction. Answer:Temperature of reactant, concentration of reactant, size of reactant, catalyst and pressure Question 2:Complete the following statements:(a) The __________ the temperature of reactants, the higher the rate of reaction.(b) The __________ the concentration of reactants, the higher the rate of reaction.(c) The __________ the size … Read more

Question 1:Give one example of a fast reaction and one example of a slow reaction in daily life. Answer:Example of a fast reaction: Burning of candleExample of a slow reaction: Photosynthesis(any other suitable answer is accepted) Question 2:Define rate of reaction. Answer:Rate of reaction is the change in the quantity of reactants or products of … Read more